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Morphology of Flowering Plants · Question 62

NEET 2013MCQEasy📈 Topic in 75% papers+4−1
1

In China rose the flowers are

  1. zygomorphic, hypogynous with imbricate aestivation
  2. zygomorphic, epigynous with twisted aestivation
  3. actinomorphic, hypogynous with twisted aestivation
  4. actinomorphic, epigynous with valvate aestivation

Answer

(3) actinomorphic, hypogynous with twisted aestivation

Solution

As per NCERT, the flower of china rose (Malvaceae) can be divided into two equal halves by any radial plane ⇒ actinomorphic.

⇒ NCERT gives china rose as an example of a hypogynous flower (superior ovary).

⇒ Twisted aestivation (one margin of each petal overlaps the next) is found in china rose, lady's finger and cotton.

∴ The flowers are actinomorphic, hypogynous with twisted aestivation.

Answer: (3)

NEET 2013

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2

Seed coat is not thin, membranous in

  1. groundnut
  2. gram
  3. maize
  4. coconut.
NEET 2013
3

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation?

  1. Six
  2. Seven
  3. Eight
  4. Five
NEET 2013 (Karnataka)
4

Inflorescence is racemose in

  1. brinjal
  2. tulip
  3. aloe
  4. soybean.
NEET 2013 (Karnataka)
5

In a cymose inflorescence the main axis

  1. has unlimited growth
  2. bears a solitary flower
  3. has unlimited growth but lateral branches end in flowers
  4. terminates in a flower.
NEET 2013 (Karnataka)
6

How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (oleander) have opposite phyllotaxy?

  1. Three
  2. Four
  3. Five
  4. Two
NEET 2013 (Karnataka)
7

Which one of the following organisms is correctly matched with its three characteristics?

  1. Pea : C3 pathway, endospermic seed, vexillary aestivation
  2. Tomato : twisted aestivation, axile placentation, berry
  3. Onion : bulb, imbricate aestivation, axile placentation
  4. Maize : C3 pathway, closed vascular bundles, scutellum
AIPMT 2012 (Mains)
8

How many plants in the list given below have marginal placentation? Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Colchicum, Onion, Moong, Pea, Tobacco, Lupin

  1. Four
  2. Five
  3. Six
  4. Three
AIPMT 2012 (Mains)
9

Placentation in tomato and lemon is

  1. parietal
  2. free central
  3. marginal
  4. axile
AIPMT 2012 (Prelims)
10

Cymose inflorescence is present in

  1. Solanum
  2. Sesbania
  3. Trifolium
  4. Brassica
AIPMT 2012 (Prelims)
11

Phyllode is present in

  1. Asparagus
  2. Euphorbia
  3. Australian Acacia
  4. Opuntia
AIPMT 2012 (Prelims)

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